Model coordinates match pixel coordinates

OpenGL OpenGL: Basic Coding
1

I’m trying to use GL for a tile based graphics program and want to use textured Quads as the tiles. At the same time I want to be able to specify the quads in pixels, for example, glVertex2i(0, 100) and have the vertex on the screen at x = 0 and y = 100. How would be the best way to set up the ‘camera’ to achieve this?

2

Something like setting projection matrix to :
glOrtho(0,windowWidth,0,windowHeight,-1,1);